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I tried a 3" exhaust when i was NA after i did my first tune and the damn thing lost 9whp. i was able to retune and get it back but see any real gains. I only went 3" cause i was gonna build a turbo kit. the exhaust is still on my auto car thats part of the reason i dont test certain products on the auto anymore cause my baseline would be low.
swift996 pm sent
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